It's a balmy June afternoon when a young man is rushed into the ER with superficial but not deep burns. You see this on his back. This feathering skin injury is pathognomonic for this case, but will fade within hours. You immediately stick EKG leads on this patient as he is at risk for cardiac arrhythmias. He mumbles that he was "just playing football when it happened."
Challenge: When what happened?
1. What's the finding in the image?
(I have to say I'm particularly proud of discovering this one. I think it's really cool.)
Image shown under fair use.